arm64: defconfig: enable the SA8775P GPUCC driver

Enable the GPUCC module for SA8775P platforms in the arm64 defconfig.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230417125844.400782-2-brgl@bgdev.pl